Apparatus and method of uplink control channel resource allocation for new radio

ABSTRACT

Provided are a method of transmitting an uplink control information in a next-generation/5G radio access network. The method may include receiving uplink control channel resource set configuration information to transmit the uplink control information from a base station, determining one of uplink control channel resource sets contained in the uplink control channel resource set configuration information, determining one of uplink control channel resources configuring the determined uplink control channel resource set, and transmitting the uplink control information through the determined uplink control channel resource.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority benefit of Korean PatentApplication No. 10-2017-0128188, filed on Sep. 29, 2017, No.10-2017-0162728, filed on Nov. 30, 2017 and No. 10-2018-0077270, filedon Jul. 03, 2018 in the Korean Intellectual Property Office, thedisclosures of which are incorporated herein by reference in theirentirety.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present disclosure relates to a method of allocating an uplinkcontrol channel resource in a next-generation/5G radio access network(hereinafter, referred to as a new radio (NR)).

2. Description of the Related Art

Recently, the 3rd generation partnership project (3GPP) has approved the“Study on New Radio Access Technology”, which is a study item forresearch on next-generation/5G radio access technology. On the basis ofthe Study on New Radio Access Technology, Radio Access Network WorkingGroup 1 (RAN WG1) has been discussing frame structures, channel codingand modulation, waveforms, multiple access methods, and the like for anew radio (NR). It is required to design the NR not only to provide animproved data transmission rate as compared with the long term evolution(LTE)/LTE-Advanced, but also to meet various requirements in detailedand specific usage scenarios.

An enhanced mobile broadband (eMBB), massive machine-type communication(mMTC), and ultra reliable and low latency communication (URLLC) areproposed as representative usage scenarios of the NR. In order to meetthe requirements of the individual scenarios, it is required to designNR to have flexible frame structures, compared with theLTE/LTE-Advanced.

In particular, there is a need to develop a method for enabling a userdevice to transmit an uplink channel, such as an uplink control channeland an uplink data channel, to a base station based on a bandwidth part(BWP) when the user device uses various BWPs in NR.

SUMMARY OF THE INVENTION

An object of the present disclosure is to provide an apparatus andmethod of preventing ambiguity between indication and interpretation ofan uplink control channel transceiving resource of a base station and auser equipment, resulted from uplink bandwidth part (hereinafter,referred to as BWP) switching in the NR.

In accordance with an aspect of the present disclosure, a method of auser equipment is provided for transmitting uplink control information.The method may include receiving uplink control channel resource setconfiguration information for the transmission of the uplink controlinformation from a base station, determining one of uplink controlchannel resource sets contained in the uplink control channel resourceset configuration information, determining one of uplink control channelresources configuring the determined uplink control channel resourceset, and transmitting the uplink control information through thedetermined uplink control channel resource.

In accordance with a further aspect of the present disclosure, a methodof a base station may be provided for receiving uplink controlinformation. The method may include transmitting uplink control channelresource set configuration information for the transmission of theuplink control information to a user equipment, and receiving the uplinkcontrol information through one of uplink control channel resourcesconfiguring one of uplink control channel resource sets contained in theuplink control channel resource set configuration information.

In accordance with another aspect of the present disclosure, a userequipment may be provided for transmitting uplink control information.The user equipment may include a receiver configured to receive uplinkcontrol channel resource set configuration information for thetransmission of the uplink control information from a base station, acontroller configured to determine one of uplink control channelresource sets contained in the uplink control channel resource setconfiguration information and determine one of uplink control channelresources configuring the determined uplink control channel resourceset, and a transmitter configured to transmit the uplink controlinformation through the determined uplink control channel resource.

In accordance with a further aspect of the present disclosure, a basestation may be provided for receiving uplink control information. Thebase station may include a transmitter configured to transmit uplinkcontrol channel resource set configuration information for thetransmission of the uplink control information to a user equipment, anda receiver configured to receive the uplink control information throughone of uplink control channel resources configuring one of uplinkcontrol channel resource sets contained in the uplink control channelresource set configuration information.

In accordance with yet another aspect of the present disclosure, it mayprevent ambiguity between indication and interpretation of an uplinkcontrol channel transceiving resource of a base station and a userequipment, resulted from UL BWP switching in the NR.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the disclosure and are incorporated in and constitute apart of the disclosure, illustrate aspects of the disclosure andtogether with the description serve to explain the principle of thedisclosure.

FIG. 1 is a diagram illustrating arrangements of orthogonal frequencydivision multiple (OFDM) symbols in case of using different subcarrierspacings from each other according to embodiments of the presentdisclosure;

FIG. 2 is a conceptual view of a bandwidth part (BWP) according tembodiments of the present disclosure;

FIG. 3A is a diagram illustrating an example of configuring N BWPs inone serving cell for an user equipment;

FIG. 3B is a diagram illustrating i) PUCCH resource sets configuringeach of N BWPs and ii) PUCCH resources configuring each PUCCH resourceset;

FIG. 3C is a diagram illustrating downlink control information includingPUCCH resource indication information;

FIG. 4 is a flowchart illustrating a method of a user equipment fortransmitting uplink control information according to embodiments of thepresent disclosure;

FIG. 5 is a flowchart illustrating a method of a base station forreceiving uplink control information according to embodiments of thepresent disclosure;

FIG. 6 is a diagram illustrating a base station according to embodimentsof the present disclosure; and

FIG. 7 is a diagram illustrating a user equipment according toembodiments of the present disclosure.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

Hereinafter, the present preferred embodiments of the disclosure will bedescribed in detail with reference to the accompanying drawings. Indenoting elements of the drawings by reference numerals, the sameelements will be referenced by the same reference numerals although theelements are illustrated in different drawings. In the followingdescription of the disclosure, detailed description of known functionsand configurations incorporated herein may be omitted when it may makethe subject matter of the disclosure rather unclear.

In the present disclosure, a wireless communication system refers to asystem for providing various communication services such as a voicecommunication service, a packet data service, etc. The wirelesscommunication system includes a user equipment (UE) and a base station(BS).

In the present disclosure, the UE is defined as a generic term includingdevices using in wireless communication, such as a UE supportingwideband code division multiple access (WCDMA), long term evolution(LTE), high speed packet access (HSPA), international mobiletelecommunications (IMT)-2020 (5G or new radio), or the like, or amobile station (MS) supporting a global system for mobile communications(GSM), a user terminal (UT), a subscriber station (SS), a wirelessdevice, or the like.

The BS or a cell generally refers to a station communicating with theUE. The BS or cell of the present disclosure is defined as a genericterm including, but not limited to, all of various coverage areas suchas a Node-B, an evolved Node-B (eNB), a gNode-B (gNB), a low power node(LPN), a sector, a site, various types of antennas, a base transceiversystem (BTS), an access point, a point (e.g., a transmitting point, areceiving point, or a transceiving point), a relay node, a megacell, amacrocell, a microcell, a picocell, a femtocell, a remote radio head(RRH), a radio unit (RU), and a small cell.

The BS provides radio coverage and is necessary in each of theabove-described various cells. The BS may be classified into twocategories. 1) The BS may be an apparatus that covers a megacell, amacrocell, a microcell, a picocell, a femtocell, and a small cell, inassociation with a wireless area, or 2) the BS may indicate a radiocoverage area itself. In case of 1), the BS may be apparatuses providingany radio coverage area and controlled by an identical entity, orapparatuses interacting with each other to cooperatively establish theradio coverage area. According to a method of establishing the radiocoverage area, the BS may be a point, a transmission/reception point, atransmission point, a reception point, or the like. In case of 2), theBS may be a radio coverage area itself to transmit or receive a signalfrom a UE or neighboring BS perspective.

The cell of the present disclosure may refer to a coverage of a signaltransmitted from a transmission point or a transmission/reception point,a component carrier having the coverage of the signal transmitted fromthe transmission point or the transmission/reception point, or thetransmission/reception point itself.

The user equipment and the BS of the present disclosure are entities ofperforming uplink and downlink communications used to embody thetechnology and technical conceptions described in the presentdisclosure. The user equipment and the BS are defined as a generic termand not limited to a specific term or word.

The uplink (UL) refers to data transmission and reception from a userequipment to a base station, and the downlink (DL) refers to datatransmission and reception from a base station to a user equipment.

The uplink/downlink transmission may be performed using one of i) a timedivision duplex (TDD) technique that performs transmission by theallocation of different time slots, ii) a frequency division duplex(FDD) technique that performs transmission by the allocation ofdifferent frequencies, and iii) both the frequency division duplex (FDD)and the time division duplex (TDD).

Furthermore, according to the related standard, the UL/DL is configuredbased on a signal carrier or a pair of carriers in the wirelesscommunication system.

UL/DL may transmit control information through a control channel of anuplink or downlink channel, such as a physical DL control channel(PDCCH), a physical UL control channel (PUCCH), and the like. Further,UL/DL may transmit data through a data channel of the uplink or downlinkchannel, such as a physical DL shared channel (PDSCH), a physical ULshared channel (PUSCH), and the like.

The DL may refer to communication or a communication path from multipletransmission/reception points to a device, or the UL may refer tocommunication or a communication path from the device to the multipletransmission/reception points. In the DL, a transmitter may be a part ofmultiple transmission/reception points and a receiver may be a part ofthe device. In the UL, a transmitter may be a part of the device and areceiver may be a part of multiple transmission/reception points.

Hereinafter, transmission and reception of a signal through a channelsuch as the PUCCH, the PUSCH, the PDCCH, or the PDSCH, may be describedas the transmission and reception of the PUCCH, the PUSCH, the PDCCH, orthe PDSCH.

Meanwhile, higher layer signaling includes radio resource control (RRC)signaling for transmitting RRC information containing an RRC parameter.

The BS performs a DL transmission to a UE. The BS may transmit i)downlink control information that includes information on scheduling forreceiving a physical DL data channel which is a primary channel forunicast transmission and ii) a physical DL control channel fortransmitting DL control information which is for transmitting schedulingapproval information for transmission on an UL data channel.Hereinafter, transmission and reception of a signal through each channelmay be described as transmission and reception of a correspondingchannel.

Any of multiple access techniques may be applied to wirelesscommunication systems of the present disclosure, and therefore nolimitation is imposed on them. The multiple access techniques that canbe used in wireless communication systems of the present disclosure mayinclude time division multiple access (TDMA), frequency divisionmultiple access (FDMA), CDMA, orthogonal frequency division multipleaccess (OFDMA), non-orthogonal multiple access (NOMA), OFDM-TDMA,OFDM-FDMA, OFDM-CDMA, or the like. The NOMA includes sparse codemultiple access (SCMA), low cost spreading (LDS), and the like.

Embodiments according to the present disclosure may be applicable toresource allocation in an asynchronous wireless communication evolvinginto LTE/LTE-advanced and IMT-2020 from GSM, WCDMA, and HSPA.Furthermore, the embodiments may be applicable to resource allocation ina synchronous wireless communication evolving into CDMA, CDMA-2000, andUMB.

A machine type communication (MTC) device of the present disclosure mayrefer to a device that is low cost (or low complexity), a user equipmentthat supports coverage enhancement, or the like. The MTC device of thepresent disclosure may refer to a device defined as a predeterminedcategory for supporting low costs (or low complexity) and/or coverageenhancement.

In other words, the MTC device of the present disclosure may refer to alow cost (or low complexity) device category/type newly defined in 3GPPRelease-13 and performing LTE-based MTC related operations. The MTCdevice of the present disclosure may refer to a device category/typethat is defined in or before 3GPP Release-12 that supports enhancedcoverage in comparison with the typical LTE coverage or supports lowpower consumption, or may refer to a low cost (or low complexity) devicecategory/type newly defined in Release-13. The MTC device may refer to afurther enhanced MTC device defined in Release-14.

A narrowband Internet of Things (NB-IoT) device of the presentdisclosure refers to a device supporting radio access for cellular IoT.NB-IoT technology is aimed at indoor coverage improvement, support forlarge-scale low-speed devices, low latency sensitivity, very low devicecosts, low power consumption, and optimized network architecture.

An enhanced mobile broadband (eMBB), massive machine-type communication(mMTC), and ultra reliable and low latency communication (URLLC) areproposed as representative usage scenarios for NR having been discussedin the 3GPP recently.

A frequency, a frame, a subframe, a resource, a resource block (RB), aregion, a band, a sub-band, a control channel, a data channel, asynchronization signal, various reference signals, various signals, andvarious messages associated with NR of the present disclosure may beinterpreted as being used in the past or present or as various meaningsto be used in the future.

NR (New Radio)

Recently, the 3GPP has approved the “Study on New Radio AccessTechnology”, which is a study item for research on next-generation/5Gradio access technology. On the basis of such a study item, the 3GPPhave started discussions about frame structure, channel coding &modulation, waveform, multiple access scheme, etc.

It is required to design the NR not only to provide a data transmissionrate enhanced as compared with that of LTE/LTE-Advanced, but also tomeet various requirements for detailed and specific usage scenarios. Inparticular, an eMBB, mMTC, and URLLC have been discussed asrepresentative usage scenarios of the NR, and it has been required todesign more flexible frame structures as compared with those forLTE/LTE-Advanced in order to meet the requirements of each usagescenario.

Specifically, the eMBB, mMTC, URLLC are considered as representativeusage scenarios of the NR. Since each usage scenario imposes a differentrequirement of data rates, latency, coverage, etc., many discussionshave conducted for a technique of efficiently multiplexing radioresource units based on different types of numerology (e.g., asubcarrier spacing (SCS), a subframe, a transmission time interval(TTI), etc.) in order to efficiently satisfy requirements according tousage scenarios through a frequency band of any NR system.

To this end, there also have been many discussions conducted fordeveloping i) a technique of multiplexing numerology having differentSCS values based on TDM, FDM or TDM/FDM through one NR carrier and ii) atechnique of supporting one or more time units in configuring schedulingunits in a time domain.

In this regard, in the NR, a subframe has been defined as one type oftime domain structure. As reference numerology to define a subframeduration, a single subframe duration is defined as having 14 OFDMsymbols of 15 kHz SCS-based normal CP overhead, like the LTE. Therefore,the subframe in the NR may have a time duration of 1 ms. Unlike the LTE,since the subframe of the NR is an absolute reference time duration, aslot and a mini-slot may be defined as a time unit used for an actualUL/DL data scheduling. In this case, the number of OFDM symbolsconstituting a corresponding slot, a value of y, has been defined asy=14 regardless of the numerology, but not limited thereto.

Therefore, any slot may have 14 symbols. In accordance with atransmission direction for a slot, all of the symbols may be used for DLtransmission or UL transmission, or the symbols may be used in theconfiguration of a DL portion+a gap+a UL portion.

Further, a mini-slot having fewer symbols than the slot has been definedin any numerologies (or SCS), and, as a result, a short time domainscheduling interval for the transmission and reception of UL/DL data maybe configured based on the mini-slot. Also, a long time domainscheduling interval for the transmission and reception of UL/DL data maybe configured by slot aggregation.

In particular, in case of transmission and reception of latency-criticaldata, such as Ultra-reliable low-latency communication (URLLC), whenscheduling is performed on a slot basis according to 0.5 ms (7 symbols)or 1 ms (14 symbols) defined in a frame structure based on a numerologyhaving a small SCS value such as 15 kHz, it may be difficult to meetlatency requirements. To solve this problem, a mini-slot having fewerOFDM symbols than the slot may be defined so that scheduling forlatency-critical data, such as the URLLC, may be performed based on themini-slot.

Further, as described above, there has been discussions on a techniqueof scheduling data in accordance with latency requirements based on thelength of the slot (or mini-slot) defined in each numerology, bymultiplexing and supporting the numerologies using the TDM or FDMtechnique, which have different SCS values within one NR carrier. Forexample, as illustrated in FIG. 1, the length of a symbol for 60 kHz SCSis shortened by a fourth of that for 15 kHz SCS, and thus a 60 kHz-basedslot is shortened to have a length of about 0.125 ms as compared with a15 kHz-based slot having a length of 0.5 ms under the same conditionthat seven OFDM symbols constitute one slot.

As described above, techniques of satisfying each requirement of URLLCand eMBB has been discussed by defining different SCSs or different TTIlengths in the NR.

Wider Bandwidth Operations

A typical LTE system supports a scalable bandwidth operation for an LTEcomponent carrier (CC). An LTE service provider may use a bandwidth ofat least 1.4 MHz up to 20 MHz according to a frequency deploymentscenario when configuring one LTE CC. Accordingly, an LTE UE supportstransmission/reception capabilities of 20 MHz bandwidth for one LTE CC.

However, the NR has been designed to support UEs each having differenttransmission/reception bandwidth capability from another in onebroadband NR component carrier. Accordingly, as illustrated in FIG. 2,it is required to configure one or more bandwidth parts (BWPs)constituting bandwidths obtained by subdividing an NR CC and to supporta wider and flexible bandwidth operation by configuring and activatingdifferent BWPs from each other to each UE.

Specifically, in the NR, one or more BWPs may be configured through oneserving cell from a view of a UE. The UE may transmit and/or receiveUP/DL data by activating one DL BWP and one UP BWP, in the serving cell.Furthermore, in a case where the UE are connected to a plurality ofserving cells (e.g., when the UE performs carrier aggregation (CA)), theUE may transmit and/or receive UP/DL data by activating one DL BWPand/or one UL BWP for each serving cell and using a radio resource ofeach serving cell.

Specifically, an initial bandwidth part (BWP) may be defined for aninitial access procedure in any serving cell, and one or moreUE-specific BWPs may be configured through RRC signaling dedicated foreach UE, and a default bandwidth part (BWP) may be defined for afallback operation for each UE.

It is possible to define A plurality of downlink and/or uplink BWPs tobe simultaneously activated and used according to the configurations ofBWPs and the capability of a UE in any serving cell. However, the NRrel-15 defines that only one DL BWP and one UL BWP are activated andused in an UE at any time.

NR PUCCH

In the typical LTE system, a PUCCH is transmitted on a single subframebasis, where the PUCCH is an UL control channel for the transmission ofuplink control information (UCI) by a UE. That is, one PUCCH istransmitted through 14 SC-FDMA symbols constituting one subframe in atime domain. In a case where the last symbol is used for an SRStransmission, the PUCCH is transmitted through 13 symbols except for thelast symbol.

Furthermore, different PUCCH formats are defined according to payloadsizes of UL control information. For example, the different PUCCHformats are defined as follows: i) PUCCH format 1/1a/1b is used totransmit UL control information of one or two bits (e.g., a schedulingrequest (SR) and a HARQ ACK); ii) PUCCH format 2a/2b is used to transmitan UL control information having a moderate payload size (e.g., CQI/CSIfeedback); and PUCCH format 3 or more is used to transmit the feedbackof the UL control information having a large payload size when carrieraggregation (CA) is used.

However, the NR defines a PUCCH structure to have various durations in aslot having 14 symbols. For example, the NR defines a long durationPUCCH and a short duration PUCCH according to the number of symbolsrequired to transmit a single PUCCH, N values, in a single slot for thetransmission of uplink control information (UCI) by a UE. For the UE totransmit the UCI, the NR defines two types of PUCCHs which are i) ashort duration PUCCH transmitted using one to two symbols and ii) a longduration PUCCH transmitted using four to fourteen symbols in a singleslot.

Hereinafter, the short and long duration PUCCHs may be refer to as shortand long PUCCHs respectively. That is, the short duration PUCCH may betransmitted using one or two symbols, and the long duration PUCCH may betransmitted using four to fourteen symbols in one symbol.

Furthermore, similar to the typical LTE, the NR defines different PUCCHformats according to payload sizes of uplink control information foreach of the long duration PUCCH and the short duration PUCCH. Forexample, for the short duration PUCCH, the NR defines i) a PUCCH formatfor the transmission of UL control information with a payload size of upto two bits and ii) a PUCCH format for the transmission of UL controlinformation with a payload size exceeding 2 bits. Furthermore, for thelong duration PUCCH, the NR defines i) a PUCCH format for thetransmission of UL control information with a payload size of up to twobits and ii) a PUCCH format for the transmission of UL controlinformation with a payload size exceeding 2 bits.

As described, for defining a PUCCH structure to transmit UL controlinformation in the NR, it may be required to define a PUCCH duration anda PUCCH format.

In accordance with an embodiment of the present disclosure, a method maybe provided for allocating a PUCCH resource for HARQ ACK/NACK feedbackor aperiodic CSI reporting by a UE in the NR. In some embodiments of thepresent disclosure, the PUCCH resource allocation method is described asbeing applied for HARQ ACK/NACK feedback and aperiodic CSI reporting bya UE, but it is not limited thereto. For example, the PUCCH resourceallocation method according to embodiments may be applied for a servicerequest (SR) or periodic CSI reporting.

As described above, in the NR, one or more BWPs may be configuredthrough one serving cell from a UE perspective. For example, at leastone DL BWP and at least one UL BWP may be configured according to atransmission direction supported by the serving cell that usesunpairedspectrum (i.e. TDD) or paired spectrum (i.e. FDD),.

The NR defines a BS to activate and use only one DL BWP and one UL BWPat a predetermined time for each UE in order for transmitting andreceiving each of DL/UL radio channel and signal (e.g. PDCCH/PDSCH,PUSCH/PUCCH etc.) When the serving cell is a DL-only cell or an UL-onlycell, the serving cell may activate and use only one or more DL BWPs oronly one or more UL BWPs.

Accordingly, in a UE perspective, one or more UL BWPs and/or DL BWPs maybe independently provided and activated for a secondary cell (Scell)configured for carrier aggregation, in addition to a primary cell(Pcell) to which the UE is connected first.

As described, when one or more BWPs are configured in an serving cell ofan UE, the UE can activate and use one BWP at any time.

Specifically, for a DL transmission and/or reception, the serving cellactivates and uses one DL BWP in any DL subframe/slot/mini-slot of oneor more DL BWPs configured for a corresponding UE. Likewise, for an ULtransmission and/or reception, the serving cell activates and uses oneUL BWP in any UL subframe/slot/mini-slot of one or more UL BWPsconfigured for the UE.

Activation/deactivation indications of the DL BWP and the UL BWP to anUE may be performed through DL control information (DCI) transmittedthrough a PDCCH. For example, the activation/deactivation of the DL BWPmay be performed through DL assignment DL control information containingresource allocation information on a PDSCH. Furthermore, theactivation/deactivation of the UL BWP may be performed through an ULgrant containing resource allocation information on a PUSCH.

For example, a UE may receive, from a BS, BWP configuration informationon one or more BWP sets constituted by one or more BWPs configured forthe UE. Next, the UE may receive, from the BS, DL control informationcontaining information that indicates one of one or more BWPs containedin the one or more BWP sets configured by the BWP configurationinformation. The UE may receive the PDSCH or transmit the PUSCH or PUCCHthrough the one BWP indicated in the DL control information.

At this time, the BWP configuration information may be receive from theBS through high layer signaling, such as RRC signaling.

In accordance with an embodiment of the present disclosure, provided area PUCCH resource allocation method considering a UE-specific BWP basedoperation and detailed operations of a UE and a BE related thereto. Inparticular, in connection with the activation/deactivation of the ULBWP, provided is a specific method of allocating a PUCCH resource toprevent ambiguity between indication and interpretation of a PUCCHtransceiving resource of a BS and a UE, resulted from UL BWP switching.

In the NR, a BS/network may configure a single PUCCH resource setconfigured by one or more PUCCH resources for HARQ ACK/NACK feedback ora plurality of PUCCH resource sets, each of which is configured by oneor more PUCCH resources, for each UE, and then transmit the configuredone or more PUCCH resource sets to each UE through UE-specific higherlayer signaling.

As described, when one or multiple PUCCH resource sets are configuredfor an UE through the UE-specific higher layer signaling, the BS mayinclude PUCCH resource indication information as HARQ ACK/NACK feedbackin response to a PDSCH reception at a corresponding UE in DL allocationDL control information and transmit the DL allocation DL controlinformation containing the PUCCH resource indication information whentransmitting PDSCH scheduling control information for the UE through aPDCCH.

That is, for each PDSCH transmission for an UE, the BS selects i) one ofi) PUCCH resources configuring a single PUCCH resource set configuredfor the UE or ii) one of PUCCH resources configuring one of multiplePUCCH resource sets and a PUCCH resource set. Then, the BS transmits theselected one PUCCH resource through DL allocation DL controlinformation. Accordingly, the UE may be defined to dynamically allocatea PUCCH resource to be used for HARQ ACK/NACK feedback.

In accordance with an embodiment of the present disclosure, proposed area method of configuring a PUCCH resource set and a method of indicatingthe corresponding PUCCH resource.

As a method of configuring one or more PUCCH resource sets for an UE, inconfiguring one or more PUCCH resource sets for each UE for HARQACK/NACK feedback of the UE, it may be defined that one or more separateresource sets are configured for each UL BWP configured for the UE.

For example, as illustrated in FIG. 3A, when N (e.g, N is a naturalnumber greater than 1) UL BWPs for any UE are configured, it may bedefined that separate one or multiple PUCCH resource sets are configuredfor each UL BWP to indicate a PUCCH resource for HARQ ACK/NACK feedbackof the UE and then transmitted to the UE through UE-specific higherlayer signaling. Although FIG. 3A shows that overlapping between theBWPs in each frequency axis does not occur, one or more BWPs may beconfigured to overlap with another BWP partially or fully in anyfrequency axis. However, the present embodiment is not limited to aspecific UL BWP configuration.

Referring to FIG. 3B, the BS may configure total N groups of one ormultiple PUCCH resource sets per each BWP for a UE, for example, fromone or multiple PUCCH resource sets for a BWP #1, one or multiple PUCCHresource sets for a BWP #2, . . . , up to one or multiple PUCCH resourcesets for a BWP #N, where N is an integer number equal to and greaterthan 1. For example, as illustrated in FIG. 3B, the BWP #2 including oneor multiple PUCCH resource sets may be formed of a first to fourth PUCCHresource sets.

As described, each PUCCH resource includes one or multiple PUCCHresource sets configured for each UL BWP through higher layer signaling.Such each PUCCH resource may be defined as PUCCH format configurationinformation, time/frequency domain PUCCH resource configurationinformation (or additionally code domain resource configurationinformation) in the UL BWP, or the like. For example, as illustrated inFIG. 3B, a specific PUCCH resource set, such as a second PUCCH resourceset, may be configured by a first to fourth PUCCH resources.

As described above, when one or multiple PUCCH resource sets configureeach BWP through the higher layer signaling, in configuring an area ofPUCCH resource indication information through the DL allocation DLcontrol information, the BS may include explicitly UL BWP indicationinformation for the transmission of a PUCCH therein.

For example, the PUCCH resource indication information through the DLallocation DL control information may include UL BWP indicationinformation (e.g. BWP index information)+PUCCH resource set indicationinformation (e.g. PUCCH resource set index information) in thecorresponding UL BWP+PUCCH resource indication information (e.g. a PUCCHresource index in the PUCCH resource set) to be used by the UE for HARQACK/NACK feedback of PUCCH resources configuring the corresponding PUCCHresource set.

In this regard, when a BWP is configured with specific classes of PUCCHresource sets , the PUCCH resource set indication information may bereplaced by the specific classification information. For example, when aseparate PUCCH resource set is configured for each of a PUCCH format,the PUCCH resource set indication information may include a PUCCHduration, a PUCCH payload size, and the like, each of the correspondingPUCCH format information, PUCCH duration information, PUCCH payload sizeinformation, and the like.

For example, as described above, when a PUCCH resource set is configuredthrough RRC signaling, a separate PUCCH resource set for each PUCCHformat may be configured, and the PUCCH format indication informationfor the HARQ ACK/NACK feedback of the UE may be transmitted through theDL allocation DL control information, and thus a resource set for PUCCHresource allocation of the UE may be derived.

For another example, a separate PUCCH resource set may be configuredaccording to a PUCCH payload size to be transmitted by the UE, i.e. thepayload size of UL control information, and the PUCCH resource set forthe PUCCH resource allocation may be determined according to the ULcontrol information payload size to be transmitted by the UE. Asillustrated in FIG. 3B, only the PUCCH resource indication information(e.g. an ACK/NACK resource indication (ARI)) may be transmitted throughDL allocation DL control information, and, when the UE determines one ormore PUCCH resource sets to interpret it, derived may be a correspondingPUCCH resource set according to an UL control information payload size(UCI payload size) to be transmitted by the UE through a PUCCH resourceallocated through the corresponding DL allocation DL control.

For example, the UL control information payload size may be divided intofour areas according to the number of bits, and one of a first to fourthPUCCH resource sets may be derived according to the number of bits ofthe UL control information, as illustrated in FIG. 3B.

As illustrated in FIG. 3C, DL allocation DL control information maycontain PUCCH resource indication information (PUCCH resourceinformation or a PUCCH resource indicator). The PUCCH resourceindication information indicates one UL control channel resource, forthe transmission of UL control information, of UL control channelresources configuring an UL control channel resource set. For example,as illustrated in FIG. 3B, in a case where the UL control channelresource set is formed of the first to fourth PUCCH resources, PUCCHresource indication information illustrated in FIG. 3C may indicate oneof the four PUCCH resources.

The PUCCH resource set information (or including indication informationaccording to the classification of the PUCCH) and the PUCCH resourceindex information in the corresponding PUCCH resource set may be encodedin a joint coding scheme and transmitted or received through oneinformation area. The information related to the PUCCH resource setindication may be required only in a case that supports to configure aplurality of PUCCH resource sets in one UL BWP, and when theconfiguration of only one UCCH resource set per one UL BWP is supported,the PUCCH resource set indication information may be excluded.

As described, when the UL BWP indication information for thetransmission of the PUCCH is included in the DL allocation DL controlinformation, the UL BWP indication information may be additionally usedas UL BWP activation information of the UE and UL BWP switchingindication information resulted therefrom.

For example, the UE may perform UL BWP switching, according to the ULBWP indication information, after a predetermined slot, for example, kslots, from a slot to receive the UE the DL allocation DL controlinformation. In this case, the UL BWP switching means an operation ofdeactivating a currently-active UL BWP and activating a new UL BWPaccording to the indication information.

Furthermore, the UE may perform the UL BWP switching (that is, anoperation of deactivating a currently-active UL BWP and activating a newUL BWP according to the indication information) according to UL BWPindication information before a predetermined slot, for example, jslots, from a PUCCH transmission slot. In this case, the k value or thej value is an arbitrary integer value of 0 or more and has a certainfixed value. The k value or the j value may be configured by a BS andtransmitted through higher layer signaling, or the k value or the jvalue may be determined according to the capability of the UE. When theUL BWP indication information indicates a currently-active UL BWP, theUE does not perform the operation of the UL BWP switching.

As another method of configuring a PUCCH resource indication informationarea through DL allocation DL control information, the UL BWP may bedetermined implicitly. As a result, the PUCCH resource indicationinformation of the DL allocation DL control information may beconfigured by a PUCCH resource set indication information +PUCCHresource indication information, to be used for HARQ ACK/NACK feedbackby the UE, of PUCCH resources configuring the PUCCH resource set, exceptfor the UL BWP indication information.

The PUCCH resource set indication information +the PUCCH resourceindication information, to be used for HARQ ACK/NACK feedback by the UE,of PUCCH resources configuring the PUCCH resource set may be configuredin the same manner as described above. In a case where the UL BWP isdetermined implicitly as described above, an UL BWP for the PUCCHtransmission may be determined as an active UL BWP of the correspondingUE in a slot for the transmission of the DL allocation DL controlinformation.

As another method of implicitly determining an UL BWP, an UL BWP for thetransmission of the PUCCH may be determined as an active UL BWP in atime point to transmit the PUCCH of the corresponding UE, that is, aslot through which the PUCCH is transmitted (or in a case where thePUCCH is transmitted through a plurality of slots, a slot through whichthe transmission of the PUCCH is started.) As another method ofimplicitly determining an UL BWP for the PUCCH transmission, UL BWPsassociated with each other for the PUCCH transmission for each DL BWP towhich DL allocation DL control information for PDSCH resource allocationmay be transmitted.

Also, the UL BWPs associated with each other for the PUCCH transmissionfor each DL BWP through which PDSCH transmission may be performedaccording to DL allocation DL control information. In this case, the BSmay configure UL BWPs associated with each other for the PUCCHtransmission for each DL BWP configured for an UE and transmit them tothe corresponding UE through a UE-specific high layer signaling or L1control signaling, or define implicitly a DL BWP-UL BWP associationrule.

For example, in a case where the same BWP configuration is performed forboth a DL and an UL in a TDD cell, or in a case where the same number ofBWP configurations is performed for both a DL and an UL in a TDD/FDDcell, the DL BWP and the UL BWP of the same index may be associated witheach other.

As another method of configuring one or more PUCCH resource sets forHARQ ACK/NACK feedback of the UE, the one or more PUCCH resource setsmay be commonly configured to one or more UL BWP. That is, when PUCCHresources configuring one PUCCH resource set configured for a UE isdefined, each of the PUCCH resources configuring the PUCCH resource setmay be configured with one or more PUCCH resources defined in all ULBWPs configured for the UE.

When a BS configures each of one or more PUCCH resources configuring oneor more PUCCH resource sets for an UE, information on an UL BWPconfigured by the one or more PUCCH resources may be contained in eachPUCCH resource.

Accordingly, each PUCCH resource configuring one or multiple PUCCHresource sets configured through the higher layer signaling for an UEmay be defined as PUCCH format configuration information, UL BWPconfiguration information, and time/frequency domain PUCCH resourceconfiguration information in the UL BWP (or additionally code-domainresource configuration information), or the like.

In this case, PUCCH resource indication information transmitted throughthe DL allocation DL control information, as in the case of the implicitUL BWP indication, may be configured by PUCCH resource set indicationinformation (for example, PUCCH resource set index information)+PUCCHresource indication information to be used for HARQ ACK/NACK feedback bythe UE among PUCCH resources configuring the PUCCH resource set (forexample, a PUCCH resource index in a PUCCH resource set), or only PUCCHresource indication information to be used for HARQ ACK/NACK feedback bythe UE among PUCCH resources configuring one or more PUCCH resource sets(for example, a PUCCH resource index in a PUCCH resource set.)

Likewise, when a BWP is configured with specific classes of PUCCHresource sets, the PUCCH resource set indication information may bereplaced by the specific classification information.

For example, when a separate PUCCH resource set is configured for eachof a PUCCH format, a PUCCH duration, a PUCCH payload size, and the like,each of the corresponding PUCCH format information, PUCCH durationinformation, PUCCH payload size information, and the like may be used inplace of each of the PUCCH resource set indication information.

The PUCCH resource set information (or, including indication informationaccording to the classification of the PUCCH) and the PUCCH resourceindex information in the corresponding PUCCH resource set may be encodedin a joint coding scheme and transmitted or received through oneinformation area. The information related to the PUCCH resource setindication may be necessary only in a case of supporting theconfiguration of a plurality of PUCCH resource sets for each UE. ThePUCCH resource set indication information may be excluded in a case ofsupporting the configuration of only one UCCH resource for each UE.

Additionally, when configuration information on PUCCH resourcesconfiguring PUCCH resource sets configured through high layer signalingcontains UL BWP configuration information, according to PUCCH resourceallocation indicated by PUCCH resource indication information of DLallocation DL control information, as in the case of the explicit UL BWPindication, the UE may perform an UL BWP activation or an UL BWPswitching operation to an UL BWP configured by the one or more PUCCHresources.

Additionally, as described above, when PUCCH resource sets for HARQACK/NACK feedback of the UE for each UL BWP are configured, or when oneor more PUCCH resource sets are commonly configured in one or more ULBWPs, each PUCCH resource configuring the one or more PUCCH resourcesets may be allocated for aperiodic CSI feedback of the UE.

Specifically, aperiodic CSI reporting of any UE may be triggered by theBS through DL allocation DL control information. For this purpose, whena DL allocation DL control information format for an UE is defined, aninformation area for triggering aperiodic CSI reporting of the UE may bedefined to be included therein. In a case where the aperiodic CSIreporting of the UE is triggered through the aperiodic CSI reportingindication information area, the aperiodic CSI reporting information maybe multiplexed and then transmitted, along with HARQ ACK/NACK feedbackinformation on a PDSCH through the one or more PUCCH resources accordingto the PUCCH resource allocation information indicated through the DLallocation DL control information. That is, the PUCCH resource setconfiguration may be a common PUCCH resource set configuration for HARQACK/NACK feedback and aperiodic CSI reporting.

In addition, apart from the configuration of one or more PUCCH resourcesets for the HARQ ACK/NACK feedback, a BE/network may configure one ormore PUCCH resource sets for aperiodic CSI reporting and transmit theconfigured one or more PUCCH resource sets to each UE throughUE-specific High layer signaling. That is, one or multiple PUCCHresource sets for only aperiodic CSI feedback for each UE may beconfigured and transmitted to each UE through UE-specific High layersignaling.

In this case, one or more PUCCH resource sets for the aperiodic CSIfeedback may be separately configured for each PUCCH format or for eachPUCCH duration, in the same manner as the PUCCH resource setconfiguration method for the HARQ ACK/NACK feedback, or be configuredregardless of that.

When one or more separate PUCCH resource sets for aperiodic CSIreporting are configured, as described above, one or more PUCCH resourcesets for the aperiodic CSI reporting may be configured for each UL BWP,or one or more PUCCH resource sets for the aperiodic CSI reporting maybe commonly configured in one or more UL BWPs.

In this regard, in a case where one or more PUCCH resource sets forseparate aperiodic CSI reporting are configured, the PUCCH resourceallocation for the HARQ ACK/NACK feedback through the DL allocation DLcontrol information described above may be applied to PUCCH resourceallocation for the aperiodic CSI reporting. Additionally, an operationdescribed above may be applied to an UL BWP activation or a UE operationrelated to an UL BWP switching.

Additionally, when aperiodic CSI reporting through an UL grant istriggered, radio channel indication information (i.e., a PUSCH or PUCCH)for the transmission of aperiodic CSI reporting information by a UE maybe included.

As described above, the method of the PUCCH resource set configurationand the method of the corresponding PUCCH resource indication have beendiscussed, referring to FIGS. 2 to 3C. Hereinafter, referring to FIGS. 4to 7, methods of transmitting and receiving UL control information by aUE and/or a BS, and the related UE and BS will be described in detail.

FIG. 4 is a flowchart showing a method of a UE for transmitting ULcontrol information b according to embodiments of the presentdisclosure.

Referring to FIG. 4, a UE receives, from a BS, UL control channelresource set configuration information for transmitting the UL controlinformation 5400.

One or more UL control channel resource sets may be configured for eachUL BWP configured for a UE. The UL BWP may be activated through DLcontrol information.

Specifically, a corresponding serving cell for a DL transmission and/orreception activates and uses one DL BWP contained in any DLsubframe/slot/mini-slot of one or more DL BWPs configured for acorresponding UE. Likewise, a corresponding serving cell for an ULtransmission and/or reception activates and uses one UL BWP contained inan UL subframe/slot/mini-slot of one or more UL BWPs configured for acorresponding UE.

Activation/deactivation indications of the DL BWP and the UL BWP to anUE may be performed through DL control information (DCI) transmittedthrough a PDCCH. Specifically, the activation/deactivation of the DL BWPmay be performed through DL assignment DL control information containingresource allocation information on a PDSCH. Furthermore, theactivation/deactivation of the UL BWP may be performed through an ULgrant including resource allocation information on a PUSCH.

For example, a UE may receive BWP configuration information on one ormore BWP sets configured by one or more BWPs configured for the UE froma BS. Next, the UE may receive, from the BS, DL control informationcontaining information for indicating one of one or more BWPs containedin the one or more BWP sets configured by the BWP configurationinformation. The UE may receive the PDSCH or transmit the PUSCH or PUCCHthrough the one BWP indicated in the DL control information.

At this time, the BWP configuration information may be receive from theBS through high layer signaling, such as RRC signaling.

In the NR, a BS/network may configure a single PUCCH resource setconfigured by one or more PUCCH resources for HARQ ACK/NACK feedback ora plurality of PUCCH resource sets, each of which is configured by oneor more PUCCH resources, for each UE, and then transmit the configuredone or more PUCCH resource sets to each UE through UE-specific higherlayer signaling.

In a case where one or multiple PUCCH resource sets for an UE throughthe UE-specific higher layer signaling are configured, the BS maytransmit corresponding DL allocation DL control information includingPUCCH resource indication information for HARQ ACK/NACK feedback by theUE in response to a corresponding PDSCH reception when transmittingPDSCH scheduling control information for the UE through a PDCCH.

Furthermore, the UE determines one of UL control channel resource setscontained in UL control channel resource set configuration informationS410.

In step S410, when the UL control channel resource sets to transmit theUL control information are determined, the UE may determine one of theUL control channel resource sets according to the size of the UL controlinformation.

Furthermore, the UE determines one of UL control channel resourcescontained in the determined one UL control channel resource set S420.

Additionally, the UE may receive from the BS DL control informationcontaining information indicating one, for the transmission of the ULcontrol information, of UL control channel resources configuring ULcontrol channel resource sets.

At this time, the one UL control channel resource for the UL controlinformation transmission of the UL control channel resources containedin the determined UL control channel resource set may be indicated fromthe BS through the DL control information.

As described above, the UE may determine, for each PDSCH transmission,one of PUCCH resources contained in a single PUCCH resource setconfigured for the UE, or determine one of a plurality of PUCCH resourcesets configured for the UE and one of PUCCH resources contained in thecorresponding PUCCH resource set, and then dynamically allocate a PUCCHresource.

Specifically, as a method of configuring PUCCH resource sets for an UE,in configuring PUCCH resource sets for each UE for HARQ ACK/NACKfeedback of the UE, separate resource sets may be configured for each ULBWP configured for the UE.

For example, as illustrated in FIG. 3A, in a case where N (N is anatural number greater than 1) UL BWPs for an UE are configured,separate PUCCH resource sets to each UL BWP for a PUCCH resourceindication for HARQ ACK/NACK feedback of the UE may be configured andtransmitted to the UE through UE-specific higher layer signaling.

Referring to FIG. 3B, the BS may configure, for each BWP for a UE, totalN PUCCH resource sets, for example, from PUCCH resource sets for a BWP#1, PUCCH resource sets for a BWP #2, . . . , up to PUCCH resource setsfor a BWP #N. For example, as illustrated in FIG. 3B, the BWP #2including PUCCH resource sets may be configured by a first to fourthPUCCH resource sets.

In this case, each PUCCH resource configuring PUCCH resource setsconfigured for each UL BWP through higher layer signaling may be definedas PUCCH format configuration information, time/frequency domain PUCCHresource configuration information (or additionally code domain resourceconfiguration information) in the UL BWP, or the like. For example, asillustrated in FIG. 3B, a second PUCCH resource set may be configured bya first to fourth PUCCH resources.

Furthermore, when a BWP is configured with specific classes of PUCCHresource sets, the PUCCH resource set indication information may bereplaced by the specific classification information. For example when aseparate PUCCH resource set is configured for each of a PUCCH format, aPUCCH duration, a PUCCH payload size, and the like, each of thecorresponding PUCCH format information, PUCCH duration information,PUCCH payload size information, and the like may be used in place ofeach of the PUCCH resource set indication information.

That is, a separate PUCCH resource set may be configured according to aPUCCH payload size to be transmitted by the UE, i.e. the payload size ofUL control information, and the PUCCH resource set for the PUCCHresource allocation may be determined according to the UL controlinformation payload size to be transmitted by the UE. As illustrated inFIG. 3B, only the PUCCH resource indication information (e.g. anACK/NACK resource indication (ARI) may be transmitted through DLallocation DL control information, and, when the UE determines one ormore PUCCH resource sets to interpret it, derived may be a correspondingPUCCH resource set according to an UL control information payload size(UCI payload size) to be transmitted by the UE through a PUCCH resourceallocated through the corresponding DL allocation DL control.

For example, the UL control information payload size may be divided intofour areas according to the number of bits, and one of a first to fourthPUCCH resource sets may be derived according to the number of bits ofthe UL control information, as illustrated in FIG. 3B.

As illustrated in FIG. 3C, DL allocation DL control information maycontain PUCCH resource indication information (PUCCH resourceinformation or a PUCCH resource indicator). The PUCCH resourceindication information indicates one UL control channel resource, forthe transmission of UL control information, of UL control channelresources configuring an UL control channel resource set. For example,as illustrated in FIG. 3B, in a case where the UL control channelresource set is configured by the first to fourth PUCCH resources, PUCCHresource indication information illustrated in FIG. 3C may indicate oneof the four PUCCH resources.

The various methods described above referring to FIGS. 2 to 3C may beapplied to a specific PUCCH resource set configuration method and acorresponding PUCCH resource indication in some embodiments of thepresent disclosure.

The UE transmits the UL control information through the determined theUL control channel resource S430.

FIG. 5 is a flowchart of a BS for receiving UL control informationaccording to some embodiments of the present disclosure.

Referring to FIG. 5, a BS transmits to a UE UL control channel resourceset configuration information for the transmission of the UL controlinformation S500.

As described above, one or more UL control channel resource sets may beconfigured for each UL BWP configured for a UE. The UL BWP may beactivated through DL control information.

Specifically, a corresponding serving cell for a DL transmission and/orreception activates to use one DL BWP contained in any DLsubframe/slot/mini-slot of one or more DL BWPs configured for acorresponding UE. Likewise, the corresponding serving cell for an ULtransmission and/or reception activates to use one UL BWP contained inany UL subframe/slot/mini-slot of one or more UL BWPs configured for thecorresponding UE.

Activation/deactivation indications of the DL BWP and the UL BWP to anUE may be performed through DL control information (DCI) transmittedthrough a PDCCH. Specifically, the activation/deactivation of the DL BWPmay be performed through DL assignment DL control information containingresource allocation information on a PDSCH. Furthermore, theactivation/deactivation of the UL BWP may be performed through an ULgrant containing resource allocation information on a PUSCH.

For example, the UE may receive BWP configuration information on BWPsets configured by BWPs configured for the UE from the BS. Next, the UEmay receive DL control information containing information indicating oneof BWPs contained in the BWP sets configured by the BWP configurationinformation from the BS. The UE may receive the PDSCH, or transmit thePUSCH or PUCCH through the one BWP indicated in the DL controlinformation.

At this time, the BWP configuration information may be receive from theBS through high layer signaling, such as RRC signaling.

In the NR, a BS/network may configure a single PUCCH resource setconfigured by PUCCH resources for HARQ ACK/NACK feedback or a pluralityof PUCCH resource sets, each of which is configured by PUCCH resources,for each UE, and then transmit the configured PUCCH resource sets toeach UE through UE-specific higher layer signaling. In a case wherePUCCH resource sets for an UE through the UE-specific higher layersignaling are configured, when transmitting PDSCH scheduling controlinformation for the UE through a PDCCH, the BS may transmitcorresponding DL allocation DL control information including PUCCHresource indication information for HARQ ACK/NACK feedback by the UE inresponse to a corresponding PDSCH reception.

Furthermore, the BS receives UL control information through one of ULcontrol channel resources configuring one of UL control channelresources contained in UL control channel resource set configurationinformation S510.

As described above, the UL control channel resource sets fortransmitting the UL control information may be determined as one of theUL control channel resource sets according to the size of the UL controlinformation.

As described above, the BS may transmit to the UE DL control informationcontaining information indicating one, for the transmission of the ULcontrol information, of UL control channel resources configuring ULcontrol channel resource sets.

At this time, for the UL control information transmission, the one ofthe UL control channel resources configuring the UL control channelresource sets may be indicated to the UE through the DL controlinformation.

That is, the BS selects, for each PDSCH transmission for an UE, one ofPUCCH resources configuring a single PUCCH resource set configured forthe UE, or one of PUCCH resources configuring one of PUCCH resource setsand a PUCCH resource set, configured for the UE. Then, the BS transmitsthe selected PUCCH resource through DL allocation DL controlinformation. Accordingly, the UE dynamically may allocate a PUCCHresource to be used for HARQ ACK/NACK feedback.

In accordance with an embodiment of the present disclosure, proposed area method of configuring a PUCCH resource set and a method of indicatingthe corresponding PUCCH resource.

As a method of configuring one or more PUCCH resource sets for an UE, inconfiguring PUCCH resource sets for each UE for HARQ ACK/NACK feedbackof the UE, one or more separate resource sets may be configured for eachUL BWP configured for the UE.

For example, as illustrated in FIG. 3A, in a case where N (N is anatural number greater than 1) UL BWPs for an UE are configured,separate PUCCH resource sets to each UL BWP for a PUCCH resourceindication for HARQ ACK/NACK feedback of the UE may be configured andtransmitted to the UE through UE-specific higher layer signaling.

Referring to FIG. 3B, the BS may set, for each BWP for a UE, total NPUCCH resource sets, for example, from PUCCH resource sets for a BWP #1,PUCCH resource sets for a BWP #2, . . . , up to one or multiple PUCCHresource sets for a BWP #N. For example, as illustrated in FIG. 3B, theBWP#2 including PUCCH resource sets, may be configured by a first tofourth PUCCH resource sets.

In this case, each PUCCH resource configuring PUCCH resource setsconfigured for each UL BWP through higher layer signaling may be definedas PUCCH format configuration information, time/frequency domain PUCCHresource configuration information (or additionally code domain resourceconfiguration information) in the UL BWP, or the like. For example, asillustrated in FIG. 3B, a second PUCCH resource set may be configured bya first to fourth PUCCH resources.

In this regard, when a BWP is configured with specific classes of PUCCHresource sets, the PUCCH resource set indication information may bereplaced by the specific classification information. For example, when aseparate PUCCH resource set is configured to each of a PUCCH format, aPUCCH duration, a PUCCH payload size, and the like, each of thecorresponding PUCCH format information, PUCCH duration information,PUCCH payload size information, and the like may be used in place ofeach of the PUCCH resource set indication information.

That is, a separate PUCCH resource set may be configured according to aPUCCH payload size to be transmitted by the UE, i.e. the payload size ofUL control information, and the PUCCH resource set for the PUCCHresource allocation may be determined according to the UL controlinformation payload size to be transmitted by the UE. As illustrated inFIG. 3B, only the PUCCH resource indication information (e.g. anACK/NACK resource indication (ARI) may be transmitted through DLallocation DL control information, and, when the UE determines one ormore PUCCH resource sets to interpret it, derived may be a correspondingPUCCH resource set according to an UL control information payload size(UCI payload size) to be transmitted by the UE through a PUCCH resourceallocated through the corresponding DL allocation DL control.

For example, the UL control information payload size may be divided intofour areas according to the number of bits, and one of a first to fourthPUCCH resource sets may be derived according to the number of bits ofthe UL control information, as illustrated in FIG. 3B.

As illustrated in FIG. 3C, DL allocation DL control information maycontain PUCCH resource indication information (PUCCH resourceinformation or a PUCCH resource indicator). The PUCCH resourceindication information indicates one UL control channel resource, forthe transmission of UL control information, of UL control channelresources configuring an UL control channel resource set. For example,as illustrated in FIG. 3B, in a case where the UL control channelresource set is configured by the first to fourth PUCCH resources, PUCCHresource indication information illustrated in FIG. 3C may indicate oneof the four PUCCH resources.

The various methods described above referring to FIGS. 2 to 3C may beapplied to a specific PUCCH resource set configuration method and acorresponding PUCCH resource indication in some embodiments of thepresent disclosure.

FIG. 6 is a diagram illustrating a BS according to embodiments of thepresent disclosure.

Referring to FIG. 6, a BS 600 includes a controller 610, a transmitter620, and a receiver 630.

In a method of allocating UL control channel resources for an UE in theNR, the controller 610 is configured to control overall operations sothat separate PUCCH resource sets are configured for each UL BWPconfigured for the UE.

The transmitter 620 and the receiver 630 are used to transmit andreceive signals, messages, and data necessary for carrying out someembodiments as described above, to and from the UE.

The transmitter 620 transmits to the UE UL control channel resource setconfiguration information for the transmission of UL controlinformation.

One or more UL control channel resource sets may be configured for eachUL BWP configured for the UE.

The UL BWP may be activated through DL control information.

The receiver 630 receives UL control information through one of one ormore UL control channel resources configuring one of UL control channelresources contained in UL control channel resource set configurationinformation.

The one or more UL control channel resource sets for transmitting the ULcontrol information may be determined as one of the UL control channelresource sets according to the size of the UL control information.

The BS may transmit to the UE DL control information containinginformation indicating one, for the transmission of the UL controlinformation, of UL control channel resources configuring one or more ULcontrol channel resource sets.

At this time, the one, for the UL control information transmission, ofthe UL control channel resources configuring the UL control channelresource sets may be indicated to the UE through the DL controlinformation.

FIG. 7 is a diagram illustrating a UE according to embodiments of thepresent disclosure.

Referring to FIG. 7, a UE 700 includes a receiver 710, a controller 720and a transmitter 730.

The receiver 710 receives DL control information and data, messagesthrough a corresponding channel from a BS.

Furthermore, in a method of allocating one or more UL control channelresources for any UE in the NR, the controller 720 is configured tocontrol overall operations of the UE so that separate one or more PUCCHresource sets are configured for each UL BWP configured for the UE.

The transmitter 730 transmits UL control information and data, messagesthrough a corresponding channel to the BS.

The controller 720 determines one of one of UL control channel resourcesets contained in UL control channel resource set configurationinformation, and determines one of UL control channel resourcesconfiguring the determined one UL control channel resource set.

The UL control channel resource set(s) may be configured for each UL BWPconfigured for the UE.

The UL BWP may be activated through the DL control information.

When the one or more UL control channel resource sets for transmittingthe UL control information are determined, the controller 720 maydetermine one of the UL control channel resource sets according to thesize of the UL control information.

The receiver 710 receives from the BS UL control channel resource setconfiguration information for the transmission of UL controlinformation.

The receiver 710 receives from the BS DL control information containinginformation indicating one, for the transmission of the UL controlinformation, of UL control channel resources configuring UL controlchannel resource sets. At this time, one UL control channel resource,for the UL control information transmission, of UL control channelresources configuring the determined UL control channel resource set maybe indicated from the BS through the DL control information.

The transmitter 730 transmits the UL control information through thedetermined UL control channel resource.

The standardized specifications or standard documents related to theembodiments described above have been omitted in order to simplify thedescription but constitute a part of the present disclosure.Accordingly, it should be construed that the incorporation of thecontent of the standardized specifications and part of the standarddocuments into the detailed description and claims is included withinthe scope of the present disclosure.

The features, structures, configurations, and effects described in thepresent disclosure are included in at least one embodiment but are notnecessarily limited to a particular embodiment. A person skilled in theart can apply the features, structures, configurations, and effectsillustrated in the particular embodiment embodiments to another one ormore additional embodiment embodiments by combining or modifying suchfeatures, structures, configurations, and effects. It should beunderstood that all such combinations and modifications are includedwithin the scope of the present disclosure Although the exemplaryembodiments have been described for illustrative purposes, a personskilled in the art will appreciate that various modifications andapplications are possible without departing from the essentialcharacteristics of the present disclosure. For example, the specificcomponents of the exemplary embodiments may be variously modified. Thevarious embodiments described above can be combined to provide furtherembodiments. These and other changes can be made to the embodiments inlight of the above-detailed description. In general, in the followingclaims, the terms used should not be construed to limit the claims tothe specific embodiments disclosed in the specification and the claims,but should be construed to include all possible embodiments along withthe full scope of equivalents to which such claims are entitled.Accordingly, the claims are not limited by the disclosure.

Moreover, the terms “system,” “processor,” “controller,” “component,”“module,” “interface,”, “model,” “unit” or the like are generallyintended to refer to a computer-related entity, either hardware, acombination of hardware and software, software, or software inexecution. For example, a component may be, but is not limited to being,a process running on a processor, a processor, a controller, a controlprocessor, an object, an executable, a thread of execution, a program,and/or a computer. By way of illustration, both an application runningon a controller or processor and the controller or processor can be acomponent. One or more components may reside within a process and/orthread of execution and a component may be localized on one computerand/or distributed between two or more computers.

1-15. (canceled)
 16. A method of transmitting uplink (UL) controlinformation by a user equipment, the method comprising: receiving, froma base station, UL control channel resource set configurationinformation for UL control information transmission; determining one ofUL control channel resource sets contained in the UL control channelresource set configuration information; determining one of UL controlchannel resources contained in the determined UL control channelresource set; and transmitting UL control information through thedetermined UL control channel resource, wherein the determining of theone of the UL control channel resource sets is performed based on a sizeof the UL control information.
 17. The method according to claim 16,wherein the UL control channel resource sets are configured for each ULbandwidth part (BWP) configured for the user equipment.
 18. The methodaccording to claim 17, wherein the each UL BWP is activated through DLcontrol information.
 19. The method according to claim 16, furthercomprising receiving, from the base station, downlink (DL) controlinformation containing information indicating the one of the UL controlchannel resources for the UL control information transmission, whereinthe one of the UL control channel resources is indicated from the basestation through the DL control information.
 20. A method of receivinguplink (UL) control information by a base station, the methodcomprising: transmitting UL control channel resource set configurationinformation for transmitting UL control information to a user equipment;and receiving the UL control information through one of UL controlchannel resources configuring one of UL control channel resource setscontained in UL control channel resource set configuration information,wherein the one of the UL control channel resource sets for the ULcontrol information transmission is determined based on a size of the ULcontrol information.
 21. The method according to claim 20, wherein theUL control channel resource sets are configured for each UL bandwidthpart (BWP) configured for the user equipment.
 22. The method accordingto claim 21, wherein the each UL BWP is activated through downlink (DL)control information.
 23. The method according to claim 20, furthercomprising transmitting, to the user equipment, DL control informationcontaining information that indicates the one of the UL control channelresources for the UL control information transmission, wherein the oneof the UL control channel resources is indicated to the user equipmentthrough the DL control information.
 24. A user equipment fortransmitting uplink (UL) control information, comprising: a receiverconfigured to receive, from a base station, UL control channel resourceset configuration information for UL control information transmission; acontroller configured to determine one of UL control channel resourcesets contained in the UL control channel resource set configurationinformation, and determine one of UL control channel resourcesconfiguring the determined one UL control channel resource set; and atransmitter configured to transmit the UL control information throughthe determined UL control channel resource, wherein the determining ofthe one of the UL control channel resource sets is performed based on asize of the UL control information.
 25. The user equipment according toclaim 24, wherein the UL control channel resource sets are configuredfor each UL bandwidth part (BWP) configured for the user equipment. 26.The user equipment according to claim 25, wherein the each UL BWP isactivated through downlink (DL) control information.
 27. The userequipment according to claim 24, wherein the receiver receives, from thebase station, DL control information containing information thatindicates the one of the UL control channel resources for the UL controlinformation transmission, wherein the one of the UL control channelresources is indicated from the base station through the DL controlinformation.